In a blog post calledAmerica’s Off-The-Radar Tech Hubs on Economicmodeling.com, the author, Christian Leithhart, said his organization looked at EMSI's (Economic Modeling Specialists International) extensive data base, eliminating both big cities and cities with a very small number of tech workers.

They highlighted MSAs (Metropolitan Statistical Areas) that have 1,000 to 50,000 jobs in the industry, have grown more than 0% since 2012 and have promising concentrations. Also, the industry needed to have grown during the recession.

The Trenton-Ewing area made the list. It's population is about 369,000 and it has 17,573 tech jobs. "Trenton's highlighted tech occupation is software developers," spread out over several different industries.

The post said the five most prevalent industries were custom computer programming, state government, computer systems design services, investment banking, and software publishing. "Software publishers take the cake with an increase of zero to 160 since 2001," the blog post said.

"Tech workers have increased 11 percent since 2001 and grew 3 percent during the recession, and workers earn a median wage of $41.23/hr," the blog post said.